Vehicle Digital Key Sharing Service Method and System

2. The vehicle digital key sharing service method of claim 1, wherein the digital key registration step comprises a step of registering the digital key in a mobile terminal-based relay mode in which on behalf of the vehicle device the mobile terminal relays registration of the vehicle digital key through authentication by the management server and a step of registering the digital key in a vehicle device-based telematics support mode in which each of the vehicle device and the mobile terminal processes registration of their own digital keys through authentication by the management server.

5. The vehicle digital key sharing service method of claim 1, wherein the secure world of the mobile terminal corresponds to a mobile secure area using one of a trusted execution environment (TEE), white box cryptography (WBC), universal subscriber identity module (USIM), and embedded subscriber identity module (eSIM).

8. The vehicle digital key sharing service method of claim 7, further comprising, in case of the vehicle device supporting telematics, changing or deleting, by the vehicle device, the digital key in response to a request of the management server to change or delete the digital key.

10. The vehicle digital key sharing service system of claim 9, wherein the vehicle device comprises an authentication controller configured to recognize the mobile terminal as the mobile terminal approaches the vehicle device, receive a public key for encryption from the recognized mobile terminal, encrypt vehicle information using the received public key and decrypt and store a received encrypted vehicle digital key and a telematics controller directly connected to the management server over a network and configured to transmit the encrypted vehicle information to the management server and receive an encrypted vehicle digital key from the management server.

11. The vehicle digital key sharing service system of claim 10, wherein the authentication controller is a mountable wireless charging pad that charges electric power by receiving a wireless power signal from the mobile terminal.